Separation of o-xylene from p-xylene and m-xylene by azeotropic

Details Separation of o-xylene from p-xylene and m-xylene by azeotropic Separation of o-xylene from p-xylene and m-xylene by azeotropic

1995-05-31

1995-11-14

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 58, 203 60, 203 62, 203 63, 203 66, 203 67, 585805, 585860, 585864, 585865, 585866, B01D 336, C07C 706

Patent

active

054663458

ABSTRACT:
o-Xylene cannot be separated from p-xylene and m-xylene by conventional distillation or rectification because of the proximity of their boiling points. o-Xylene can be readily separated from mixtures of p-xylene and m-xylene by azeotropic distillation. Effective agents are 3-methyl-1-butanol, methyl propionate and 3-pentanone.

REFERENCES:
patent: 2456561 (1948-12-01), Lake et al.
patent: 2763604 (1956-09-01), Dorsey et al.
patent: 3227632 (1966-01-01), Schmdlenbach et al.
patent: 4488937 (1984-12-01), Berg et al.
patent: 4673465 (1987-06-01), Berg et al.
patent: 5039380 (1991-08-01), Berg
patent: 5094723 (1992-03-01), Berg
patent: 5094725 (1992-03-01), Berg

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